Flora of New Zealand Series

≡Bullatina microcarpa (Vězda) Brusse Mycotaxon 49 : 11 (1993). 

Description : Thallus crustose, thin, whitish or greenish white, with scattered, stout, white bristles, to 3.5 mm diam. Apothecia sunk in thalline warts, leaving white-pruinose disc exposed, Asci 1-spored. Ascospores ellipsoidal, subarcuate, muriform 42–50 × 20–22 μm.

N: South Auckland (Lake Okaitana). On leaves of Beilschmiedia tawa. First collected in New Zealand by Barbara Polly (Polly 1997). Earlier, an unnamed species of Calenia was listed from the Waitakere Ra. (Bartlett 1988:5). Easily overlooked and probably more widespread on leaves in northern lowland and coastal forest. C. microcarpa is known also from Malaysia, Papua New Guinea and Australia (Vězda 1979; Lumbsch & Vězda 1990; McCarthy 2003c, 2006).

Pantropical

Illustrations : Vězda (1979: pl. 8, fig. 24); Polly (1997: 8); Australasian Lichenology 45 (1999: front cover); Malcolm & Malcolm (2000: 11, 117); Lumbsch et al. (2001: 46 – as Bullatina microcarpa); Malcolm & Malcolm (2001: iv, 35, 44 – as Bullatina microcarpa).

Calenia microcarpa is characterised by: the foliicolous habit; the thin, greenish white thallus with scattered white, bristles; apothecia in sunken warts; 1-spored asci; and large, muriform ascospores.